We found that almost none of the consumers understood the arbitration clause. Many thought the clause did not take away their rights. Thus, nearly half thought that a clause that said they couldn’t sue in court didn’t say that at all, while only 14 percent realized that it blocked them from suing. Similarly, 48 percent thought that they could be part of a class-action suit under a contract that said they couldn’t be. Just 12 percent recognized that the contract barred them from bringing a class-action suit.